Self-inking band han d-stam p



(NO Model.)

B B HILL SELF INKING BAND HAND STAMP.

No. 405,704. Patented June 25, 18.89.

ATTORNEY.

S. Phowutm mpmr. Wmbin ton. D. C

UNITED STATES ATENT rrrcn.

BENJAMIN B. HILL, OF PHILADELPHIA, PENNSYLVANIA.

SELF-INKING BAND HAN D-STAM P.

SPECIFICATION forming art of Letters Patent No. 405,704, dated June 25, 1889. Application filed February 27, 1883- Serial No. 265,387. (No inodel.)

To all whom it may concern.-

Be it known that I, BENJAMIN B. HILL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Self-Inking Band Hand-Stamps, of which the following is a specification, reference being had therein to the accompanying drawings.

This improvement relates to that class of hand-stamps known as self-inkers, and more particularly to a species of such stamps in which rubber bands are employed for numbering, dating, &c.; and the invention consists in the peculiar construction,arrangement, and combinations of parts hereinafter more particularly described, and then definitely pointed out in the claims, whereby such stamps are much improved and rendered more convenient for the users.

Referring now to the accompanying drawings, Figure 1 is an elevation of a stamp constructed according to my improvement, partly broken away to show details. Fig. 2 is a side view of the same. Fig. 3 is a bottom plan with the parts in position for giving an impression. Fig. 4 is a plan of the printing device detached. Fig. 5 is an enlarged section through the line 00 0c in Fig. 4, with parts broken away; and Fig. 6 is a perspective view of a modification of the drum.

Referring now to the details of construction, A represents the frame, B the yoke, O the handle, D the spring, and E the oscillating plate, all of which are substantially the same as the corresponding parts in my Patent No. 344,904, except as hereinafter described, and therefore need no particular description, otherwise than to refer to such changes as have been made. Each end of the top of the frame has a second plate added to it, so as to make a thicker portion at each end, into each of which are set two set-screws F F and G G, the former F bearing against the under side of the yoke to regulate the distance the oscillating plate is forced down, and the latter G against the oscillating plate whenthe inking of the bands is being effected, to prevent the type being driven too far into the inking-pad. Between these thickened portions is a recess in which is placed an ink ing-pad H of the ordinary construction. Pivoted at 2' to the side of the frame is a pawl I, which catches in a notch 19' in the yoke B when desired to hold the plate and bands in position for changing the latter or to allow of the ink being properly distributed over the inking-pad. The pawl will hold in the notch against the pressure of the spring D, and in fact the pressure of the spring tends to keep it there and lock the plate in position; but a slight push downward on the handle will move the pawl 'sidewise, and then the plate and bands will readily move as desired.

Attached to the oscillating plate E are two small castings J, the base of which is substantially like a Latin cross, but is provided with proj ectionsj, passing through holes formed in the plate E, and are secured therein by riveting or otherwise, the holes being preferably slightly countersunk to make the joint more secure; or, if preferred, a mold for making said castings may be so formed as to receive said plate, and the projections may be cast directly in the holes, whereby the castings may be made and attached to the plate at one operation. These castings are provided With screw-holes to receive the screws K for fastening the crossbar e, that supports the type bands L when giving the impression, and for the screws M for connecting the yoke to the oscillating plate, and have pins N projecting from their upper surfaces, which pass through holes in the shaft 0, that supports the drums P, around which the type-bands L pass in the usual manner.

Between the casting J and the shaft 0 are two springs Q, one around each pin N, which serve to keep the bands L under a proper degree of tension.

To keep the drums from accidentally turning on the shaft, I provide each drum with a friction-spring R, which will bear on the shaft, and thus, while allowing the drum to be turned as desired, will prevent any accidental movement of the same. \Vhen I use a hollow metal drum, as shown in Figs. land 5, I prefer to use a flat spring bent as shown in Fig. 5; but where I use a wooden drum I use a coiled spring, as shown in Fig. 6.

At the bottom of the legs of the frame are two small wires or rods S S, to which is at tached a plate T, which serves the double order, for the springs Q will keep the proper degree of tension on the bands; the springs R will keep the drums and bands from accidentally turning; the screws F will stop too much pressure being given to the type, thus preventing bad printing and the liability of damaged type which results therefrom, and the screws G prevent the spring D from forcing the type too far into the inking-pad and thus giving the type too much ink and inking the plate surrounding the type.

In lieu of the screws F, I may sometimes use a nut around the tube CL of the frame, which may be threaded for this purpose, as shown in dotted lines in Fig. 1; or I may set the screws in the top of the yoke, as shown in dotted lines in Fig. 1. Either of these devices I should consider the equivalent of the screws F.

I am aware that spring-stops have been used for the same purpose as my pawl I; but I consider my said pawl as an essential improvement over the spring-stop, for my device is independent of any spring, as, owing to its location, it drops by its own weight out of the way of the yoke as soon as the printing-die is pressed downward or upon the paper, yet it firmly and securely holds the yoke when desired, for, owing to theposition of the pivot of the pawl, the power of the spring D in the handle tends to firmly hold the pawl in the notch 19 of the yoke, and thus prevent the same from moving. As the pawl is so pivoted to the side of the frame that it moves in a path parallel with said side, it occupies but little room and is not liable to damage by an accidental blow, which frequently occurs with. the spring-pawl heretofore employed, espe cially when the same is used on the sheetmetal frames now so commonly employed.

I deem the peculiar arrangement of the support for the drums to be an important improvement over that shown in my patent, No.

344,904, for it is much simpler, stronger, and less liable to get out of order, especially when the stamp has to be made mostly of sheet metal, as is usually the case with these stamps. The various parts are necessarilymade extremely light, and when made, as in my aforesaid patent, with screw-holes in the shaft to hold the screws around which the springs are coiled, the screw-threads rapidly wear out, an d thus the stamp becomes useless.

WVhat I claim as new is 1. The combination, in a hand-stamp and with the yoke B and oscillating plate E therefor, of a regulating device, as the screws F, substantially as and for the purpose specified.

2. The combination, in a hand-stamp and with the frame A and the oscillating plate E therefor, of the screws G G, substantially as and for the purpose specified.

3. The combination, in a hand-stamp, of the oscillating plate E and the yoke B thereof with the frame A, having screws F G in its top, substantially as and for the purpose specified.

at. The con'lbination, in a hand-stamp and with the band-drums thereof, of a plate E, pins N, rigidly connected with said plate, a shaft 0, for supporting the drums, having holes to receive the pins, and springs around said pins N, acting against the shaft 0, sub stantially as and for the purpose specified.

5'. The combination, in a hand-stamp and with the yokeithe type-bands, and the drums therefor, of a plate E, castings J, attached thereto, provided with holes for the pivots of the yoke, and pins projecting at right angles to the plate to support the drums and their attachments, substantially as described.

6. The combination, in a hand-stamp, with a type-band, drum, and the shaft thereof, of a spring inserted in said drum and acting as a friction-surface between the drum and shaft, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 25th day of February, 1888.

- BENJAMIN B. HILL. \Vitnesses:

JOHN W. SPEOKMAN, WILLIAM G. SToEvER. 

